*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb001034
Mar007007
Apr01547200487
May2106654720011139
Jun8215862650021859
Jul34784421630010041
Aug1471451001472
Sep032659002662
Oct1382900833
Nov01210022
Dec001003949
Total5940124835005248585